| [IA] Cable modem disconnecting daily for ~30 secThis has plagued my connection for a few weeks.
I notice that internet connection is not working, and then modem log always contain these entries
6-Notice I401.0 TLV-11 - unrecognized OID
3-Critical D003.0 DHCP WARNING - Non-critical field invalid in response.
3-Critical R004.0 Received Response to Broadcast Maintenance Request, But no Unicast Maintenance o
3-Critical R005.0 Started Unicast Maintenance Ranging - No Response received - T3 time-out
4-Error C401.0 DCC-ACK not received
3-Critical R005.0 Started Unicast Maintenance Ranging - No Response received - T3 time-out
4-Error C401.0 DCC-ACK not received
Has anybody else seen this recently? |
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wthPremium
join:2002-02-20
Iowa City,IA | What your snr, upstream & downstream power levels? |
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k9iua6
join:2004-05-23
Dubuque, IA | reply to postmortem
And what time of the day is this happening? |
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 MediacomChadMediacom Social Media Relations TeamPremium,VIP
join:2010-01-20
Gulf Breeze, FL
kudos:74 | reply to postmortem
I am not showing any widespread issues in Cedar Rapids. If you would like to message me with your phone number or account number I will be happy to check your connection a bit closer. |
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| reply to wth
Here are signal levels:
Downstream Value
Signal To Noise Ratio 39.3 dB
Power Level 2.6 dBmV
Upstream Value
Channel ID 2
Power 39.2 dBmV
When it happens? no rule, it seems to happen more often when I am using internet, as logs show occurrences mostly during the evening. |
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MediacomChadMediacom Social Media Relations TeamPremium,VIP
join:2010-01-20
Gulf Breeze, FL
kudos:74 | Thank you for sending me a private message. I'll work with you there. |
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| reply to postmortem
DCC refers to Dynamic Channel Change, which is a feature of DOCSIS modems to change what downstream or upstream channel they're using.
Normally/ideally that process is seamless, but occasionally it can be noticeable in the form of brief disconnections or modem reboots.
I looked around online and saw a few people with the same log entries as you. There was discussion that the inclusion of T3 timeouts may indicate intermittent noise that would affect the modem as well.
At the same spot that you got your signals from, your upstream and downstream frequency should be listed. Keep an eye on those and see if they change when you start having problems. Also, which modem are you currently using?
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KI6RIT |
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| Modem I am using is Motorola SB501. |
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